PHP中函数内引用全局变量的方法

先看下面的代码: 复制代码 代码如下:<?php $var1 = “#####”; $var2 = “&&&&&”; function global_references($use_globals) { global $var1, $var2; if (!$use_globals) { $var2 =&$var1; //1 } else { $GLOBALS[“var2”] =&$var1; //2 } } global_references(false); echo “var2 is set to ‘$var2′”; global_references(true); echo